Need help creating AppImage for HandyKaraoke from binary

I am trying to create AppImage for HandyKaraoke from binary

Release Handy Karaoke 2.3.0 · pie62/HandyKaraoke · GitHub

I use pkg2appimage

bash -ex ./pkg2appimage recipes/HandyKaraoke.yml

with HandyKaraoke.yml as follows:

app: HandyKaraoke

ingredients:
  script:
    - wget -c "https://github.com/pie62/HandyKaraoke/releases/download/2.3.0/HandyKaraoke-2.3.0-linux-x86_64.tar.gz"
    - tar zxvf HandyKaraoke-2.3.0-linux-x86_64.tar.gz

script:
  - cp ../HandyKaraoke-2.3.0-linux-x86_64/HandyKaraoke ./usr/bin/HandyKaraoke
  - find . -name icon.png -exec cp {} HandyKaraoke.png \;

But I get “sed: no input files” at the end.
Thanks.

Please ask the author of the application to provide an AppImage. We just make the tools for application authors to make AppImages of their own applications.